diff --git a/README.md b/README.md
index df088bb..0249ef0 100644
--- a/README.md
+++ b/README.md
@@ -1036,7 +1036,7 @@ class <class_name>:
     <attr_name_2>: <type> = <default_value>
     <attr_name_3>: list/dict/set = field(default_factory=list/dict/set)
 ```
-* **An object can be made sortable with `'order=True'` or immutable with `'frozen=True'`.**
+* **Objects can be made sortable with `'order=True'` or immutable and hashable with `'frozen=True'`.**
 * **Function field() is needed because `'<attr_name>: list = []'` would make a list that is shared among all instances.**
 * **Default_factory can be any [callable](#callable).**
 
diff --git a/index.html b/index.html
index 709433e..147e805 100644
--- a/index.html
+++ b/index.html
@@ -989,7 +989,7 @@ Z = dataclasses.make_dataclass(<span class="hljs-string">'Z'</span>, [<span clas
 
 
 <ul>
-<li><strong>An object can be made sortable with <code class="python hljs"><span class="hljs-string">'order=True'</span></code> or immutable with <code class="python hljs"><span class="hljs-string">'frozen=True'</span></code>.</strong></li>
+<li><strong>Objects can be made sortable with <code class="python hljs"><span class="hljs-string">'order=True'</span></code> or immutable and hashable with <code class="python hljs"><span class="hljs-string">'frozen=True'</span></code>.</strong></li>
 <li><strong>Function field() is needed because <code class="python hljs"><span class="hljs-string">'&lt;attr_name&gt;: list = []'</span></code> would make a list that is shared among all instances.</strong></li>
 <li><strong>Default_factory can be any <a href="#callable">callable</a>.</strong></li>
 </ul>